you might think about one anyway for summer. temps on indoor grows can become brutal real fast. the thermostatic attic fan i got is big enough for a 2400 square foot home, comes with the thermostat, all the mounting hardware,ect and was UNDER 50 BUCKS. of course i had to buy the loovers that go outside and open up when the fan comes on seperate ( 20 bucks usually, but my bro that works where i got the fan cut me an 95% discount..SHHHHH!) BUT MAN, I CANT SEE HOW I EVER LIVED WITHOUT ONE....i even bought a couple of flapper type drier vents ( open and close when the fan kicks on) and mounted them right up in the top edge of the wall i put up in my flowering room so when the fan kicks on it sucks the whole room out quick. it only stays on about 3-4 minutes when it starts up. then ive got a thermostatic heater too, so my temps hardly fluctuate between day and night, just a few degrees lower.

cannabis is one of the EASIEST plants to grow, BUT its an artform.